Radon testing & mitigation in Adams County, PA
44% of basement tests here came back at or above 4 pCi/L, above the statewide 37%. That means about one in 2 homes tested needs a fix.
Adams County radon test data
Share of basement tests ≥ 4 pCi/L
First floor: 17% of 2,785 tests ≥ 4 pCi/L, median 1.4
Source: computed 2026-10-11 from PA DEP's Radon Test Results, Sept 1986 - Current (data.pa.gov, public domain). Counts tests, not homes: repeat and post-mitigation tests are included. Only a test tells you your home's level.
6 DEP-certified firms have a business address in Adams County (1 offer mitigation), with 12 certified individuals between them. Get free quotes
Radon mitigation (reduction systems) (1 firm)
Firms certified to install radon reduction systems. Firms that also test are shown here once.
Radon Protection Services Of Gettysburg
✓ PA DEP certifiedMitigationTestingGettysburg5 certified people
Radon Protection Services Of Gettysburg
✓ PA DEP certifiedMitigationTestingAddress
- 282 Longstreet Dr, Gettysburg, PA
- ✉ bob@goodbyeradon.com
- radonprotectionservicesgburg.com
Certified individuals
- Anderson, Robert (testing #1688, mitigation #1688)
- Caruso, John (testing #8714)
- Giuffreda, Matthew (testing #9120)
- Giuffreda, Matthew P. (mitigation #7624)
- Gorman, Steven (testing #9067)
DEP cert IDs
Source: DEP list DEP list, retrieved 2026-10-11 · Claim, correct or remove this listing
Radon testing (5 firms)
Henline, Travis
✓ PA DEP certifiedTestingAspers1 certified person
Henline, Travis
✓ PA DEP certifiedTestingAddress
- 105A Rice Ln, Aspers, PA
- ✉ travis@precisionpropertyinspectionspa.com
- precisionpropertyinspectionspa.com
Certified individuals
- Henline, Travis (testing #3760)
DEP cert IDs
Source: DEP list, retrieved 2026-10-11 · Claim, correct or remove this listing
S.A.F.E. Inspection Services, LLC
✓ PA DEP certifiedTestingEast Berlin2 certified people
S.A.F.E. Inspection Services, LLC
✓ PA DEP certifiedTestingAddress
- Po Box 343, East Berlin, PA
- ✉ safeinspectionservices@gmail.com
Certified individuals
- Condon, Jeremy (testing #8642)
- Feeser, Scott (testing #2193)
DEP cert IDs
Source: DEP list DEP list, retrieved 2026-10-11 · Claim, correct or remove this listing
Mason Dixon Home
⚠ Name may be cut off in DEP records✓ PA DEP certifiedTestingGettysburg1 certified person
Mason Dixon Home
Address
- 282 Longstreet Dr, Gettysburg, PA
- ✉ susankint@comcast.net
Certified individuals
- Anderson, Robert (testing #8304)
DEP cert IDs
Source: DEP list, retrieved 2026-10-11 · Claim, correct or remove this listing
Top Dawg Inspections
✓ PA DEP certifiedTestingGettysburg2 certified people
Top Dawg Inspections
✓ PA DEP certifiedTestingAddress
- 817 Storms Store Rd, Gettysburg, PA
- ✉ scott@topdawginspections.com
Certified individuals
- Clugston, Devrynn (testing #9046)
- Lyons, Winfield (testing #2985)
DEP cert IDs
Source: DEP list, retrieved 2026-10-11 · Claim, correct or remove this listing
Barrick, Darrell
✓ PA DEP certifiedTestingHanover1 certified person
Barrick, Darrell
✓ PA DEP certifiedTestingAddress
- 37 Knisley Dr, Hanover, PA
- ✉ darrellbarrick@gmail.com
Certified individuals
- Barrick, Darrell (testing #3623)
DEP cert IDs
Source: DEP list, retrieved 2026-10-11 · Claim, correct or remove this listing
Neighboring counties
Cumberland (6 firms) · Franklin (5 firms) · York (8 firms). Firms often serve across county lines.
Adjacency from U.S. Census Bureau county adjacency file.
City pages & guides
Hiring a radon pro in Adams County: quick guide
With 44% of 16,668 basement tests at or above 4 pCi/L (above the 37% statewide share), Adams County has 1 DEP-certified mitigation firm based locally.
- Verify: check the firm in the PA DEP Radon Services Directory, ask for the DEP ID (25 Pa. Code Chapter 240), or call 800-237-2366.
- Typical cost: $786-$1,274 for a mitigation system, national range from the HomeAdvisor cost guide.
- Selling or buying: PA's seller disclosure form asks about known radon and past tests (49 Pa. Code § 35.335a).
Detailed local guides: How to find a radon expert in Gettysburg
Frequently asked questions
How many certified radon mitigation firms are in Adams County?
1 DEP-certified firms offering mitigation and 6 certified radon firms in total list a business address in Adams County (PA DEP lists dated 10/01/2026). Firms from neighboring counties may also serve the area.
What share of Adams County radon tests are high?
44% of 16,668 basement tests in PA DEP's records were at or above EPA's 4 pCi/L action level, with a median of 3.4 pCi/L.
How much does radon mitigation cost in Adams County?
We don't have county-specific price data. A national cost guide reports typical installs at $786-$1,274. Get written quotes from DEP-certified mitigators.